Partial molar volume of paracetamol in water, 0.1Â M HCl and 0.154Â M NaCl at TÂ =Â (298.15, 303.15, 308.15 and 310.65)Â K and at 101.325Â kPa

The apparent molar volume of paracetamol (4-acetamidophenol) in water, 0.1 M HCl and 0.154 M NaCl as solvents at (298.15, 303.15, 308.15 and 310.65) K temperatures and at a pressure of 101.325 kPa were determined from the density data obtained with the help of a vibrating-tube Anton Paar DMA-48 densimeter. The partial molar volume, Vm, of paracetamol in these solvents at different temperatures was evaluated by extrapolating the apparent molar volume versus molality plots to m = 0. In addition, the partial molar expansivity, E∘, the isobaric coefficient of thermal expansion, αp, and the interaction coefficient, Sv, have also been computed. The expansivity data show dependence of E∘ values on the structure of the solute molecules.